andrew@ilium~$ youtube-dl "https://www.youtube.com/watch?v=BbbhZl8xqVY"
[youtube] Downloading login page
[youtube] Logging in
[youtube] BbbhZl8xqVY: Downloading webpage
[youtube] BbbhZl8xqVY: Downloading video info webpage
[youtube] BbbhZl8xqVY: Extracting video information
[youtube] BbbhZl8xqVY: Downloading js player en_US-vflHuW2fm
[download] Destination: Werner Müller - Gypsy.f244.webm
[download] 100% of 33.20MiB in 00:34
[download] Destination: Werner Müller - Gypsy.f251.webm
[download] 100% of 45.46MiB in 00:43
[ffmpeg] Merging formats into "Werner Müller - Gypsy.webm"
Deleting original file Werner Müller - Gypsy.f244.webm (pass -k to keep)
Deleting original file Werner Müller - Gypsy.f251.webm (pass -k to keep)
andrew@ilium~$